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Title:
Introduction to Interlacing Polynomials, Barrier Functions, and Kadison-Singer

Speaker:
Daniel Spielman

Abstract:
I will introduce the method of interlacing polynomials and analysis by barrier functions through a proof of the Restricted Inevitability Principle.  I will state Weaver's discrepancy-theoretic version of the Kadison-Singer Conjecture, and sketch the role that hyperbolic polynomials play in its proof.  If time permits, I will connect these with Ramanujan graphs and the matchings polynomials of graphs.

Link:
https://www.msri.org/workshops/754/schedules/19547

Workshop:
MSRI- Hot Topics: Kadison-Singer, Interlacing Polynomials, and Beyond